What is the net ATP gain after a single round of glycolysis (breakdown of one molecule of glucose)?
A) 1 ATP molecule
B) 2 ATP molecules
C) 3 ATP molecules
D) 30-32 ATP molecules

Question

Quizplus · Accepted Answer

After a single round of glycolysis, there is a net gain of 2 ATP molecules. This is because 2 ATP molecules are produced during the energy payoff phase (steps 6-10) of glycolysis, while 4 ATP molecules are produced during the energy investment phase (steps 1-5). However, 2 ATP molecules are consumed during the energy investment phase, resulting in a net gain of 2 ATP molecules.

What Is the Net ATP Gain After a Single Round